The Baker's Secret by Stephen P. Kiernan

It's 1944 and the small town of Verger on the coast of Normandy has been under German occupation for years. Food and supplies for the residents are scarce, and several have been "relocated" or killed for resistance of any kind, among them Emma's father. Emma takes care of her elderly grandmother, Meme, and bakes a dozen loaves of baguettes for the Kommandant each morning. In an attempt to help her neighbors, she secretly begins to add a bit of ground straw to the rationed dough to make an additional two baguettes to distribute among the villagers. As the weeks drag on, she discovers there is an underground Resistance forming, and she is drawn into it despite the risk. A network of barter and exchange with Emma as leader brings the village together against the enemy and gives them hope. Will the Allies arrive before her secret is discovered?